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2 years ago

State the periodic law and explain how it relates to the periodic table.

2 answers:

8 0

it relates to the periodic table because elements of the periodic table are arranged in order of increasing atomic number.

Explanation:

The periodic law states "when elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties

serious [3.7K]2 years ago

3 0

State the periodic law and explain how it relates to the periodic table.

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2.50 L of a gas at standard temperature and pressure is compressed to 575 mL. What is the new pressure of the gas

BartSMP [9]

Answer:

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Explanation:

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3 years ago

Bronze is an alloy, which is what form of matter?

grandymaker [24]

It is a Compound. have a nice day

3 0

3 years ago

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The density of H2O2 is 1.407 g/mL, and the density of O2 is 1.428 g/L. How many liters of O2 can be made from 55 mL H2O2

balandron [24]

Explanation:

mass H2O2 = 55 mL(1.407 g/mL) = 80.85 g

molar mass H2O2 = 2(1.01 g/mol) + 2(16.00 g/mol) = 34.02 g/mol

moles H2O2 = 80.85 g/34.02 g/mol = 2.377 moles H2O2

For each mole of H2O2 you obtain 0.5 mole of O2 (see the equation).

moles O2 = 2.377 moles H2O2 (1 mole O2)/(2 moles H2O2) = 1.188 moles O2

Now, you need the temperature. If you are at STP (273 K, and 1.00 atm) then 1 mole of an ideal gas at STP has a volume of 22.4 L. Without temperature you are not really able to continue. I will assume you are at STP.

Volume O2 = 1.188 moles O2(22.4 L/mole) = 0.0530 L of O2.

which is 53 mL.

8 0

2 years ago

Anyone can help me in science assignment

olya-2409 [2.1K]

Answer:

okay I will help you

Explanation:

okay

6 0

2 years ago

Read 2 more answers

Caffeine (C8H10N4O2) is a stimulant found in coffees and teas. When dissolved in water, it can accept a proton from a water mole

Olenka [21]

Answer:

See figure 1

Explanation:

If we want to find the acid and the Brønsted-Lowry base, we must remember the definition for each of these molecules:

-) Acid: hydrogen donor

-) Base: hydrogen acceptor

In the caffeine structure, we have several atoms of nitrogen. These nitrogen atoms have the ability to accept hydronium ions ( $H^+$ ). Therefore the caffeine molecule will be the base since it can accept

If caffeine is the base, the water must be the acid. So, the water in this reaction donated a hydronium ion.

Thus, caffeine is the base and water the acid. (See figure 1)

3 0

3 years ago

State the periodic law and explain how it relates to the periodic table.​

State the periodic law and explain how it relates to the periodic table.